Convert assert() statements to DbgAssert()
Convert assert() statements to DbgAssert()

Also add some ERROR logging in case a non-debug build is being
run.

BitcoinUnlimited/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited